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66831 (1999 UJ44)
Classification: Main-belt Asteroid          SPK-ID: 2066831
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07435116005997028 5.5851e-08  
a 2.760390884427323 1.7815e-08 au
q 2.555152619951185 1.5593e-07 au
i 4.989538049607279 4.6372e-06 deg
node 268.4324364459552 7.0917e-05 deg
peri 99.1172700905361 7.7696e-05 deg
M 289.6265502436923 3.3622e-05 deg
tp 2459723.961799400061
(2022-May-24.46179940)
0.0001578 TDB
period 1675.152322249995
4.59
1.6217e-05
4.44e-08
d
yr
n .2149058298868385 2.0805e-09 deg/d
Q 2.965629148903462 1.914e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      7906 days (21.65 yr)  
   first obs. used      1999-10-22  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62276  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:30:43  

Additional Information
 Earth MOID = 1.55904 au 
 Jupiter MOID = 2.40742 au 
 T_jup = 3.332 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.18   n/a MPCxxxxx  

66831 (1999 UJ44)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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